Insulating a van conversion is about two things you can't see once it's built: stopping condensation behind the walls, and not losing precious interior width. Closed-cell spray foam handles both, which is why it's a go-to for four-season van builds.
Why closed-cell for a van
- Thin profile, real R: high R-per-inch means you insulate without stealing the narrow interior.
- Seals the ribs: foam follows the van's channels and curves with no voids - exactly where batt traps moisture and rusts the body.
- Vibration-proof: it bonds and stays put on a vehicle that's always moving.
Plan it into the build
Spray before the walls, floor, cabinets and bed go in - a sealed, insulated shell is the base a conversion is built on. Mask carefully; a pro install in a confined space needs proper ventilation and control.
See van insulation. Get a quote.